如何在android中更改imageview的位置？

Question

我正在创建一个室内导航应用。我使用wifi的RSSI值进行导航。问题是：当RSSI的值发生变化时，如何用红点移动图像视图？

到目前为止我的工作：

ImageView iv1; //map image
ImageView iv2; //red spot
TextView tv1;

   @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
    this.requestWindowFeature(Window.FEATURE_NO_TITLE);
    this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

    setContentView(R.layout.activity_main);

    this.registerReceiver(this.myRssiChangeReceiver, 
            new IntentFilter(WifiManager.RSSI_CHANGED_ACTION));

    iv1=(ImageView)findViewById(R.id.imageView1);
    iv2=(ImageView)findViewById(R.id.imageView2);
    tv1=(TextView)findViewById(R.id.textView1);

    }

    private BroadcastReceiver myRssiChangeReceiver 
= new BroadcastReceiver(){

@Override
public void onReceive(Context arg0, Intent arg1) {
 // TODO Auto-generated method stub
 int newRssi = arg1.getIntExtra(WifiManager.EXTRA_NEW_RSSI, 0);
 //result.setText(String.valueOf(newRssi));
 tv1.setText(String.valueOf(newRssi));
     }};

activity_main.xml中

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.smshah.indoormap.MainActivity" >

<ImageView
    android:id="@+id/imageView1"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:scaleType="fitXY"
    android:src="@drawable/uit_floor_plan" />

<ImageView
    android:id="@+id/imageView2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_centerVertical="true"
    android:src="@drawable/loc_ptr" />

<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:textAppearance="?android:attr/textAppearanceSmall" />

Answer 1

尝试查看this等动画的示例。我认为如果您可以将其与位置更改事件联系起来并更新从 - 到坐标，那么LinearInterpolator就是您的选择。

编辑：查看此TranslateAnimation示例。这可能对你更有帮助。